Weight Question

So, I haven't been sick with m/s everyday. There have been a handful of times I have lost the battle to m/s since 7weeks pg. My question is: Is it normal to loose weight even if you aren't throwing up? I eat 3 meals plus snacks inbetween. The scale says I have lost about 2lbs since Firday. I have yet to gain any weight.

I only ask bc with my first I was really sick so weight lost was expected.